Full name is pronounced: yahn-DELL goo-STAH-vay...Signed by the Astros as a 17-year-old non-drafted free agent out of the Dominican Republic on May 25, 2010...Had an eventful 2014-15 offseason...was selected by Boston with the sixth overall pick in the 2014 Rule 5 Draft, before being traded to Kansas City on December 11, 2014... spent Spring Training with the Royals Major League club and was claimed off waivers by San Diego on March 26, 2015...returned to Houston from the Padres on April 3, 2015.
Signed by the Giants to a minor league contract in February, Gustave split the 2019 season between Class A Advanced San Jose (three games), Triple-A Sacramento (29 games) and the Giants (23 games)... Did not pitch until May after recovering from Tommy John surgery in June of 2017... Combined for a 2-2 record and a 5.52 ERA (18er, 29.1ip) in 32 games (one start) at the minor league level while posting no record with a 2.96 ERA (8er, 24.1ip) with San Francisco... Was recalled from Triple-A on July 31 with the Giants needing a few relievers following trades earlier in the day... Had his first career Major League plate appearance on August 11 vs. Philadelphia, striking out on six pitches from RHP Jake Arrieta...Recorded his first career save on September 7 at Los Angeles-NL, holding a 1-0 lead at Dodger Stadium.
Missed the entire season recovering from Tommy John reconstructive elbow surgery.
Made the Astros Opening Day roster, pitching in six games in April before suffering a right forearm injury that sidelined him for the remainder of the season...was on an Opening Day roster for the first time in his career after a strong Spring Training (1.80 ERA, 10 SO, 10.0 IP)...placed on the 10-day Disabled List with forearm tightness on April 20 (retroactive to April 19)...underwent UCL reconstruction surgery on June 21, ending his season.
Made his Major League debut and appeared in 14 total games in the Majors over the final two months of the season...was scoreless in 10 of his 14 outings and had six multi-strikeout appearances...walked four and struck out 16 in his 15.1 innings pitched...recalled to Houston on Aug. 10 for his first career Major League stint... optioned to Triple A Fresno on Aug. 14...was recalled from Triple A again on Sept. 2...made his Major League debut in Game 1 of the Astros doubleheader on Aug. 11 at MIN...allowed one run on three hits in 1.0 inning of work...earned his first career win on Sept. 27 vs. SEA after tossing 1.1 scoreless innings...pitched in 47 games at Triple A Fresno, going 3-3 with three saves, a 3.79 ERA (24ER/57IP), 23 walks and 55 strikeouts.
Spent the entire season at Double A Corpus Christi, where he was a Texas League Midseason All-Star and ﬁnished second in the Texas League in saves (20)...went 5-2 with a 2.15 ERA (14ER/58.2IP), 49 strikeouts and a .235 opponent batting average in 46 relief outings...did not give up an earned run in an 18-game stretch from June 3-Aug. 11, going 9-for-10 in save opportunities in that span...spent the majorityof Spring Training with the Royals Major League club, where he went 1-0 with a 3.68 ERA, six strikeouts and one save in 7.1 innings in the Cactus League...also pitched 1.0 scoreless inning with the Padres during the Spring after getting claimed oﬀ waivers by the club on March 26...was selected by Boston in the 2014 Rule 5 Draft (6th overall) before getting traded to Kansas City...pitched for Gigantes del Cibao in the Dominican Winter League following the season...was named the No. 30 prospect in the Royals organization by Baseball America prior to the season.
Jandel spent the entire season with Quad Cities (A) in the Houston Astros' system...Set career highs in appearances (23), starts (14), innings pitched (79.0) and strikeouts (82)...Posted a 3-2 record with 2 saves and a 3.35 ERA in 12 appearances at home, compared to a 2-3 mark and a 7.00 ERA on the road...Posted a 3-0 record with two saves and an 0.78 ERA (2 ER in 23.0 IP) as a reliever…struggled as a starter, going 2-5 with a 6.75 ERA (42 ER in 56.0 IP)...Pitched for Gigantes de Cibao in the Dominican Winter League...Went 3-0 with a 1.93 ERA in 10 appearances out of the bullpen.